687412560294 has 12 divisors (see below), whose sum is σ = 1489393880676. Its totient is φ = 229137520092.

The previous prime is 687412560251. The next prime is 687412560299. The reversal of 687412560294 is 492065214786.

687412560294 is a `hidden beast` number, since 6 + 8 + 7 + 4 + 1 + 25 + 602 + 9 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 687412560294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687412560299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19094793324 + ... + 19094793359.

It is an arithmetic number, because the mean of its divisors is an integer number (124116156723).

Almost surely, 2^687412560294 is an apocalyptic number.

687412560294 is an abundant number, since it is smaller than the sum of its proper divisors (801981320382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687412560294 is a wasteful number, since it uses less digits than its factorization.

687412560294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38189586691 (or 38189586688 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 687412560294 in words is "six hundred eighty-seven billion, four hundred twelve million, five hundred sixty thousand, two hundred ninety-four".